Lithocholic Acid-d4 MaxSpec(R) Standard

Lithocholic acid-d4 is intended for use as an internal standard for the quantification of lithocholic acid (Cay-20253) by GC- or LC-MS. Lithocholic acid is a secondary bile acid that has been shown to cause cholestasis in animal models and has also been implicated in carcinogenesis. It is produced from chenodeoxycholic acid (Cay-10011286) by bacterial action in the colon and can be conjugated with glycine or taurine. Whereas in normal colonic epithelium lithocholic acid promotes apoptosis, it has been shown to suppress apoptosis in pre-malignant colonic epithelium in the presence of a carcinogen. Lithocholic acid can activate the pregnane X receptor and the vitamin D receptor, which may serve as a biological sensor to regulate lithocholic acid-induced toxicity. Lithocholic acid-d4 MaxSpec(R) standard is a quantitative grade standard of lithocholic acid-d4 (Cay-20831) that has been prepared specifically for mass spectrometry and related applications where quantitative reproducibility is required. The solution has been prepared gravimetrically and is supplied in a deactivated glass ampule sealed under argon. The concentration was verified by comparison to an independently prepared calibration standard. This lithocholic acid-d4 MaxSpec(R) standard is guaranteed to meet identity, purity, stability, and concentration specifications and is provided with a batch-specific certificate of analysis. Ongoing stability testing is performed to ensure the concentration remains accurate throughout the shelf life of the product. Note: The amount of solution added to the vial is in excess of the listed amount. Therefore, it is necessary to accurately measure volumes for preparation of calibration standards. Follow recommended storage and handling conditions to maintain product quality.Formal Name: (3alpha,5beta)-3-hydroxy-cholan-24-oic-2,2,4,4-d4 acid. CAS Number: 83701-16-0. Synonyms: 3alpha-hydroxy Cholanic Acid-d4, LCA-d4, Lithocholate-d4. Molecular Formula: C24H36D4O3. Formula Weight: 380.6. Purity: >95%. Formulation: (Request formulation change), A solution in methanol at 100 µg/ml. SMILES: C[C@H](CCC(O)=O)[C@@]1([H])CC[C@@]2([H])[C@]3([H])CC[C@]4([H])C([2H])([2H])[C@H](O)C([2H])([2H])C[C@]4(C)[C@@]3([H])CC[C@@]21C. InChi Code: InChI=1S/C24H40O3/c1-15(4-9-22(26)27)19-7-8-20-18-6-5-16-14-17(25)10-12-23(16,2)21(18)11-13-24(19,20)3/h15-21,25H,4-14H2,1-3H3,(H,26,27)/t15-,16-,17-,18+,19-,20+,21+,23+,24-/m1/s1/i10D2,14D2. InChi Key: SMEROWZSTRWXGI-POXZWENPSA-N.